package com.yixun.qfbao.utils;

import com.alibaba.fastjson.JSONObject;
import com.yixun.qfbao.hander.BatchAddPremisesRecommenderHander;
import org.apache.commons.lang.StringUtils;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.FileEntity;
import org.apache.http.entity.InputStreamEntity;
import org.apache.http.entity.StringEntity;
import org.apache.http.entity.mime.HttpMultipartMode;
import org.apache.http.entity.mime.MultipartEntityBuilder;
import org.apache.http.entity.mime.content.FileBody;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.web.multipart.MultipartFile;

import java.io.BufferedReader;
import java.io.File;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.URLConnection;
import java.nio.charset.Charset;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

/**
 * http请求
 * 
 * @author jzliu
 */
public class HttpApi {
	private static Logger logger= LoggerFactory.getLogger(HttpApi.class);
	
	/**
	 * 调用非固定地址
	 * 
	 * @param url 接口url
	 * @param data //json入参
	 * @return json
	 */
	public static String doPostUrl(String url, JSONObject data) {
		String result = null;
		HttpClient client = HttpClientBuilder.create().build();
		HttpPost httpPost = null;
		try {
			httpPost = new HttpPost(url);
			List<NameValuePair> params = new ArrayList<NameValuePair>();
			JSONObject json = new JSONObject();
			json.put("params", data);
			params.add(new BasicNameValuePair("body", json.toString()));
			UrlEncodedFormEntity entity = new UrlEncodedFormEntity(params, "UTF-8");
			httpPost.setEntity(entity);
			HttpResponse response = client.execute(httpPost);
			if (response != null) {
				HttpEntity resEntity = response.getEntity();
				if (resEntity != null) {
					result = EntityUtils.toString(resEntity, "UTF-8");
				}
			}
		} catch (Exception e) {
			logger.error("doPostUrl url: {}, data: {}, error: ", url, data, e);
		}
		return result;
	}
	
	/**
	 * body 未json
	 * 
	 * @param url
	 * @param jsonBody
	 * @return
	 */
	public static String doPost(String url, String jsonBody) {
		String result = null;
		HttpClient client = HttpClientBuilder.create().build();
		HttpPost httpPost = null;
		try {
			httpPost = new HttpPost(url);
			httpPost.setHeader("Content-Type", "application/json;charset=UTF-8");
			StringEntity se = new StringEntity(jsonBody, Charset.forName("UTF-8"));
			se.setContentType("application/json");
			httpPost.setEntity(se);
			HttpResponse response = client.execute(httpPost);
			if (response != null) {
				HttpEntity resEntity = response.getEntity();
				if (resEntity != null) {
					result = EntityUtils.toString(resEntity, "UTF-8");
				}
			}
		} catch (Exception e) {
			logger.error("doPost url: {}, jsonBody: {}, error: {}", url, jsonBody, e);
		}
		return result;
	}
	
	/**
	 * get请求
	 * @param url
	 * @param param
	 * @param contentType 编码格式
	 * @return
	 */
	public static String sendGet(String url, String param, String contentType) {
		String result = "";
		BufferedReader in = null;
		try {
			//当编码格式为空时，默认为GBK
			if(StringUtils.isBlank(contentType)) {
				contentType = "utf-8";
			}
			String urlNameString = url + "?" + param;
			URL realUrl = new URL(urlNameString);
			// 打开和URL之间的连接
			URLConnection connection = realUrl.openConnection();
			// 设置通用的请求属性
			connection.setRequestProperty("accept", "*/*");
			connection.setRequestProperty("connection", "Keep-Alive");
			connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
			// 建立实际的连接
			connection.connect();
			// 获取所有响应头字段
			Map<String, List<String>> map = connection.getHeaderFields();
			// 遍历所有的响应头字段
//			for (String key : map.keySet()) {
//				System.out.println(key + "--->" + map.get(key));
//			}
			// 定义 BufferedReader输入流来读取URL的响应
			in = new BufferedReader(new InputStreamReader(connection.getInputStream(), contentType));
			String line;
			while ((line = in.readLine()) != null) {
				result += line;
			}
		} catch (Exception e) {
			logger.error("sendGet url: {}, param: {}, contentType: {}, error: {}", url, param, contentType, e);
		}
		// 使用finally块来关闭输入流
		finally {
			try {
				if (in != null) {
					in.close();
				}
			} catch (Exception e2) {
				logger.error("BufferedReader closed error: {}",e2);
			}
		}
		return result;
	}

	/**
	 * 上传图片
	 * @param file
	 * @param url
	 * @return
	 */
	public static String doPostForFile(MultipartFile file,String url){
		String result = null;

		CloseableHttpClient client = HttpClientBuilder.create().build();
		HttpPost httpPost = null;
		try {
			httpPost = new HttpPost(url);
//			httpPost.setHeader("Content-Type", "multipart/form-data");
//			httpPost.addHeader("Connection", "keep-alive");
			MultipartEntityBuilder builder = MultipartEntityBuilder.create();
			builder.setCharset(java.nio.charset.Charset.forName("UTF-8"));
			builder.setMode(HttpMultipartMode.BROWSER_COMPATIBLE);

			builder.addBinaryBody("file", file.getInputStream(), ContentType.MULTIPART_FORM_DATA, file.getOriginalFilename()+getFileType(file.getContentType()));

			HttpEntity entity = builder.build();
			httpPost.setEntity(entity);
			HttpResponse response = client.execute(httpPost);
			if (response != null) {
				HttpEntity resEntity = response.getEntity();
				if (resEntity != null) {
					result = EntityUtils.toString(resEntity, "UTF-8");
				}
			}
		} catch (Exception e) {
			logger.error("doPostForFile error: {}", e);
		}
		return result;
	}

	public static String getFileType(String contentType){
		if("image/jpeg".equals(contentType)){
			return ".jpg";
		}else if("image/bmp".equals(contentType)){
			return ".bmp";
		}else if("image/gif".equals(contentType)){
			return ".gif";
		}else{
			return ".png";
		}
	}
}
